选择题:11. What three things does every language consist

题目内容:
11. What three things does every language consist of?
A) Spelling, sound rules, and small and capitalized letters.
B) Spelling, reading rules, and hearing rules.
C) Sounds, sentences, and paragraphs and articles.
D) Sound rules, word-formations, and sentence patterns
参考答案:

膨胀土、黄土路堑边坡应采取“缓边坡、宽平台、加固坡脚、加强坡面防护和排水”的综合防护措施,坡面防护宜

膨胀土、黄土路堑边坡应采取“缓边坡、宽平台、加固坡脚、加强坡面防护和排水”的综合防护措施,坡面防护宜选用带截水缘骨架护坡,骨架内种植植物。×√

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一般认为交交变频输出的上限频率( )

一般认为交交变频输出的上限频率( ) A.与电网有相同的频率 B.高于电网频率 C.可达电网频率的80%% D.约为电网频率的1/2~1/3

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